(2012-01-14) The 64 bit AMIs consistently failed to boot on Micro instances in us-east-1a and us-east-1d. In us-east-1b and us-east-1c the AMIs occasionally fail to boot. Stop and start the instance to reassign it a random machine in these cases.

This may be an issue with Amazon running different versions of Xen on different machines / older availability zones.

Building Arch AMIs

linux-ec2 in AUR compiles the Arch linux kernel for AWS with Xen modules enabled and the XSAVE patch applied.

Updated Images

Up-to-date (as of 12/25/2012) Amazon EC2 AMI images for Arch Linux can be found here: